1 // ASM: a very small and fast Java bytecode manipulation framework 2 // Copyright (c) 2000-2011 INRIA, France Telecom 3 // All rights reserved. 4 // 5 // Redistribution and use in source and binary forms, with or without 6 // modification, are permitted provided that the following conditions 7 // are met: 8 // 1. Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // 2. Redistributions in binary form must reproduce the above copyright 11 // notice, this list of conditions and the following disclaimer in the 12 // documentation and/or other materials provided with the distribution. 13 // 3. Neither the name of the copyright holders nor the names of its 14 // contributors may be used to endorse or promote products derived from 15 // this software without specific prior written permission. 16 // 17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 21 // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 // THE POSSIBILITY OF SUCH DAMAGE. 28 package org.objectweb.asm.util; 29 30 import org.objectweb.asm.AnnotationVisitor; 31 import org.objectweb.asm.Attribute; 32 import org.objectweb.asm.FieldVisitor; 33 import org.objectweb.asm.Opcodes; 34 import org.objectweb.asm.TypePath; 35 36 /** 37 * A {@link FieldVisitor} that prints the fields it visits with a {@link Printer}. 38 * 39 * @author Eric Bruneton 40 */ 41 public final class TraceFieldVisitor extends FieldVisitor { 42 43 /** The printer to convert the visited field into text. */ 44 // DontCheck(MemberName): can't be renamed (for backward binary compatibility). 45 public final Printer p; 46 47 /** 48 * Constructs a new {@link TraceFieldVisitor}. 49 * 50 * @param printer the printer to convert the visited field into text. 51 */ TraceFieldVisitor(final Printer printer)52 public TraceFieldVisitor(final Printer printer) { 53 this(null, printer); 54 } 55 56 /** 57 * Constructs a new {@link TraceFieldVisitor}. 58 * 59 * @param fieldVisitor the field visitor to which to delegate calls. May be {@literal null}. 60 * @param printer the printer to convert the visited field into text. 61 */ TraceFieldVisitor(final FieldVisitor fieldVisitor, final Printer printer)62 public TraceFieldVisitor(final FieldVisitor fieldVisitor, final Printer printer) { 63 super(/* latest api = */ Opcodes.ASM9, fieldVisitor); 64 this.p = printer; 65 } 66 67 @Override visitAnnotation(final String descriptor, final boolean visible)68 public AnnotationVisitor visitAnnotation(final String descriptor, final boolean visible) { 69 Printer annotationPrinter = p.visitFieldAnnotation(descriptor, visible); 70 return new TraceAnnotationVisitor( 71 super.visitAnnotation(descriptor, visible), annotationPrinter); 72 } 73 74 @Override visitTypeAnnotation( final int typeRef, final TypePath typePath, final String descriptor, final boolean visible)75 public AnnotationVisitor visitTypeAnnotation( 76 final int typeRef, final TypePath typePath, final String descriptor, final boolean visible) { 77 Printer annotationPrinter = p.visitFieldTypeAnnotation(typeRef, typePath, descriptor, visible); 78 return new TraceAnnotationVisitor( 79 super.visitTypeAnnotation(typeRef, typePath, descriptor, visible), annotationPrinter); 80 } 81 82 @Override visitAttribute(final Attribute attribute)83 public void visitAttribute(final Attribute attribute) { 84 p.visitFieldAttribute(attribute); 85 super.visitAttribute(attribute); 86 } 87 88 @Override visitEnd()89 public void visitEnd() { 90 p.visitFieldEnd(); 91 super.visitEnd(); 92 } 93 } 94